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Message-Id: <1421750935-4023-36-git-send-email-thierry.reding@gmail.com>
Date: Tue, 20 Jan 2015 11:48:54 +0100
From: Thierry Reding <thierry.reding@...il.com>
To: dri-devel@...ts.freedesktop.org
Cc: linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 35/36] drm/tegra: Track tiling and format in plane state
From: Thierry Reding <treding@...dia.com>
Tracking these in the plane state allows them to be computed in the
->atomic_check() callback and reused when applying the configuration in
->atomic_update().
Signed-off-by: Thierry Reding <treding@...dia.com>
---
drivers/gpu/drm/tegra/dc.c | 127 ++++++++++++++++++++++++++++++++++----------
drivers/gpu/drm/tegra/drm.h | 4 +-
2 files changed, 101 insertions(+), 30 deletions(-)
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 835de4398c8f..1280b886481d 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -66,6 +66,23 @@ static inline struct tegra_dc_state *to_dc_state(struct drm_crtc_state *state)
return NULL;
}
+struct tegra_plane_state {
+ struct drm_plane_state base;
+
+ struct tegra_bo_tiling tiling;
+ u32 format;
+ u32 swap;
+};
+
+static inline struct tegra_plane_state *
+to_tegra_plane_state(struct drm_plane_state *state)
+{
+ if (state)
+ return container_of(state, struct tegra_plane_state, base);
+
+ return NULL;
+}
+
/*
* Reads the active copy of a register. This takes the dc->lock spinlock to
* prevent races with the VBLANK processing which also needs access to the
@@ -104,43 +121,49 @@ void tegra_dc_commit(struct tegra_dc *dc)
tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
}
-static unsigned int tegra_dc_format(uint32_t format, uint32_t *swap)
+static int tegra_dc_format(u32 fourcc, u32 *format, u32 *swap)
{
/* assume no swapping of fetched data */
if (swap)
*swap = BYTE_SWAP_NOSWAP;
- switch (format) {
+ switch (fourcc) {
case DRM_FORMAT_XBGR8888:
- return WIN_COLOR_DEPTH_R8G8B8A8;
+ *format = WIN_COLOR_DEPTH_R8G8B8A8;
+ break;
case DRM_FORMAT_XRGB8888:
- return WIN_COLOR_DEPTH_B8G8R8A8;
+ *format = WIN_COLOR_DEPTH_B8G8R8A8;
+ break;
case DRM_FORMAT_RGB565:
- return WIN_COLOR_DEPTH_B5G6R5;
+ *format = WIN_COLOR_DEPTH_B5G6R5;
+ break;
case DRM_FORMAT_UYVY:
- return WIN_COLOR_DEPTH_YCbCr422;
+ *format = WIN_COLOR_DEPTH_YCbCr422;
+ break;
case DRM_FORMAT_YUYV:
if (swap)
*swap = BYTE_SWAP_SWAP2;
- return WIN_COLOR_DEPTH_YCbCr422;
+ *format = WIN_COLOR_DEPTH_YCbCr422;
+ break;
case DRM_FORMAT_YUV420:
- return WIN_COLOR_DEPTH_YCbCr420P;
+ *format = WIN_COLOR_DEPTH_YCbCr420P;
+ break;
case DRM_FORMAT_YUV422:
- return WIN_COLOR_DEPTH_YCbCr422P;
+ *format = WIN_COLOR_DEPTH_YCbCr422P;
+ break;
default:
- break;
+ return -EINVAL;
}
- WARN(1, "unsupported pixel format %u, using default\n", format);
- return WIN_COLOR_DEPTH_B8G8R8A8;
+ return 0;
}
static bool tegra_dc_format_is_yuv(unsigned int format, bool *planar)
@@ -405,13 +428,54 @@ static void tegra_primary_plane_destroy(struct drm_plane *plane)
tegra_plane_destroy(plane);
}
+static void tegra_plane_reset(struct drm_plane *plane)
+{
+ struct tegra_plane_state *state;
+
+ if (plane->state && plane->state->fb)
+ drm_framebuffer_unreference(plane->state->fb);
+
+ kfree(plane->state);
+ plane->state = NULL;
+
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (state) {
+ plane->state = &state->base;
+ plane->state->plane = plane;
+ }
+}
+
+static struct drm_plane_state *tegra_plane_atomic_duplicate_state(struct drm_plane *plane)
+{
+ struct tegra_plane_state *state = to_tegra_plane_state(plane->state);
+ struct tegra_plane_state *copy;
+
+ copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
+ if (!copy)
+ return NULL;
+
+ if (copy->base.fb)
+ drm_framebuffer_reference(copy->base.fb);
+
+ return ©->base;
+}
+
+static void tegra_plane_atomic_destroy_state(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ if (state->fb)
+ drm_framebuffer_unreference(state->fb);
+
+ kfree(state);
+}
+
static const struct drm_plane_funcs tegra_primary_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = tegra_primary_plane_destroy,
- .reset = drm_atomic_helper_plane_reset,
- .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
- .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+ .reset = tegra_plane_reset,
+ .atomic_duplicate_state = tegra_plane_atomic_duplicate_state,
+ .atomic_destroy_state = tegra_plane_atomic_destroy_state,
};
static int tegra_plane_prepare_fb(struct drm_plane *plane,
@@ -446,20 +510,26 @@ static int tegra_plane_state_add(struct tegra_plane *plane,
static int tegra_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
+ struct tegra_plane_state *plane_state = to_tegra_plane_state(state);
+ struct tegra_bo_tiling *tiling = &plane_state->tiling;
struct tegra_plane *tegra = to_tegra_plane(plane);
struct tegra_dc *dc = to_tegra_dc(state->crtc);
- struct tegra_bo_tiling tiling;
int err;
/* no need for further checks if the plane is being disabled */
if (!state->crtc)
return 0;
- err = tegra_fb_get_tiling(state->fb, &tiling);
+ err = tegra_dc_format(state->fb->pixel_format, &plane_state->format,
+ &plane_state->swap);
+ if (err < 0)
+ return err;
+
+ err = tegra_fb_get_tiling(state->fb, tiling);
if (err < 0)
return err;
- if (tiling.mode == TEGRA_BO_TILING_MODE_BLOCK &&
+ if (tiling->mode == TEGRA_BO_TILING_MODE_BLOCK &&
!dc->soc->supports_block_linear) {
DRM_ERROR("hardware doesn't support block linear mode\n");
return -EINVAL;
@@ -487,12 +557,12 @@ static int tegra_plane_atomic_check(struct drm_plane *plane,
static void tegra_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
+ struct tegra_plane_state *state = to_tegra_plane_state(plane->state);
struct tegra_dc *dc = to_tegra_dc(plane->state->crtc);
struct drm_framebuffer *fb = plane->state->fb;
struct tegra_plane *p = to_tegra_plane(plane);
struct tegra_dc_window window;
unsigned int i;
- int err;
/* rien ne va plus */
if (!plane->state->crtc || !plane->state->fb)
@@ -507,12 +577,13 @@ static void tegra_plane_atomic_update(struct drm_plane *plane,
window.dst.y = plane->state->crtc_y;
window.dst.w = plane->state->crtc_w;
window.dst.h = plane->state->crtc_h;
- window.format = tegra_dc_format(fb->pixel_format, &window.swap);
window.bits_per_pixel = fb->bits_per_pixel;
window.bottom_up = tegra_fb_is_bottom_up(fb);
- err = tegra_fb_get_tiling(fb, &window.tiling);
- WARN_ON(err < 0);
+ /* copy from state */
+ window.tiling = state->tiling;
+ window.format = state->format;
+ window.swap = state->swap;
for (i = 0; i < drm_format_num_planes(fb->pixel_format); i++) {
struct tegra_bo *bo = tegra_fb_get_plane(fb, i);
@@ -717,9 +788,9 @@ static const struct drm_plane_funcs tegra_cursor_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = tegra_plane_destroy,
- .reset = drm_atomic_helper_plane_reset,
- .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
- .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+ .reset = tegra_plane_reset,
+ .atomic_duplicate_state = tegra_plane_atomic_duplicate_state,
+ .atomic_destroy_state = tegra_plane_atomic_destroy_state,
};
static const struct drm_plane_helper_funcs tegra_cursor_plane_helper_funcs = {
@@ -774,9 +845,9 @@ static const struct drm_plane_funcs tegra_overlay_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = tegra_overlay_plane_destroy,
- .reset = drm_atomic_helper_plane_reset,
- .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
- .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+ .reset = tegra_plane_reset,
+ .atomic_duplicate_state = tegra_plane_atomic_duplicate_state,
+ .atomic_destroy_state = tegra_plane_atomic_destroy_state,
};
static const uint32_t tegra_overlay_plane_formats[] = {
diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h
index b1c7027b26e7..8cb2dfeaa957 100644
--- a/drivers/gpu/drm/tegra/drm.h
+++ b/drivers/gpu/drm/tegra/drm.h
@@ -170,13 +170,13 @@ struct tegra_dc_window {
unsigned int h;
} dst;
unsigned int bits_per_pixel;
- unsigned int format;
- unsigned int swap;
unsigned int stride[2];
unsigned long base[3];
bool bottom_up;
struct tegra_bo_tiling tiling;
+ u32 format;
+ u32 swap;
};
/* from dc.c */
--
2.1.3
--
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